CVE-2024-50299 sctp: properly validate chunk size in sctp_sf_ootb()
A missing size validation in the Linux kernel SCTP implementation allows attackers to trigger a crash via crafted packets, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-50299?
CVE-2024-50299 is a high-severity denial of service vulnerability in Linux kernel, published on 19 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
sctp: properly validate chunk size in sctp_sf_ootb()
A size validation fix similar to that in Commit 50619dbf8db7 ("sctp: add size validation when walking chunks") is also required in sctp_sf_ootb() to address a crash reported by syzbot:
BUG: KMSAN: uninit-value in sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712 sctp_sf_ootb+0x7f5/0xce0 net/sctp/sm_statefuns.c:3712 sctp_do_sm+0x181/0x93d0 net/sctp/sm_sideeffect.c:1166 sctp_endpoint_bh_rcv+0xc38/0xf90 net/sctp/endpointola.c:407 sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88 sctp_rcv+0x3831/0x3b20 net/sctp/input.c:243 sctp4_rcv+0x42/0x50 net/sctp/protocol.c:1159 ip_protocol_deliver_rcu+0xb51/0x13d0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x336/0x500 net/ipv4/ip_input.c:233
Weakness: CWE-908
Which versions are affected by CVE-2024-50299?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50299?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-50299 being exploited?
There is no known exploitation of CVE-2024-50299 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53567, AZL-53762, BELL-CVE-2024-50299, DEBIAN-CVE-2024-50299, GHSA-q7cg-9vqh-8mc2, UBUNTU-CVE-2024-50299.